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Sending data from php to javacript in WordPress

29th November 2012 by Alan Leave a Comment

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It is often useful to send data from PHP to Javascript and WordPress gives you a method.

You can use the localise script function to send data from php to javascript in WordPress coding

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e.g.

$params = array (
"imageurl" => plugins_url('images/', __FILE__),
"post_id" => get_the_id(),
);
wp_localize_script( 'myScript', 'myparams', $params );

and access it in your javascript thus  e.g.

alert(myparams.imageurl);
alert(myparams.post_id);

The localisation needs to be called after the script is enqueued. This is useful method to pass static option data through.
However it doesn’t work if you need data from the wordpress loop after the </head> tag is closed
so you need to use this style

?>
<script type="text/javascript">
myparams=new Object();
myparams.numbers = <?php echo "'".$number_of_items."'"; ?>;
</script>
<?php

 

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Filed Under: Wordpress  Tagged: javascript, php

About Alan

I'm Alan from Fullworks Digital Ltd, where I develop WordPress Plugins .

My day job consists of developing new code and solutions along with support my WordPress plugin user.

I started as a professional programmer in 1979 and had been involved with the IT of business technology in virtually every area that exist.

Badlywired.com is my technical notebook, my aide memoire of the many interesting facts that I come across and 'how to' recipes of things I do infrequently. As I spend a lot of time gathering parts of solutions from the internet and assembling them into my own solutions, and also just learning how to do things, this blog is one way of giving something back to the online community that has helped me extensively.

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